S5 Vert so I have RPM sensing, not the speed sensing unfortunately.

All the fancy pants **** they put into the vert, but no tilt column and dinosaur power steering.

 

Bummer,
I have a manual rack which is fine for road course and driving everywhere. But, It's too slow
for autocross and tight slow turning. 295/30 18 up front though. Great feedback and really tells you
where you stand on the grip of the front tires.

 

i've seen verts with either system, i assume you've already looked though.

the pulley isn't all that special, you just need a larger V belt pulley, and drill the mounting holes appropriately